Showerhead



FIG. 1 is a perspective view of a showerhead of the new design;

FIG. 2 is a front elevational view of the showerhead of FIG. 1;

FIG. 3 is a top plan view of the showerhead of FIG. 1; and,

FIG. 4 is a bottom plan view of the showerhead of FIG. 1.

The portions of the Figures shown in broken lines are not part of the claimed design but are for illustration only and forms no part of the claimed design. The right side, left side and rear elevational views are identical to the front elevational view shown in FIG. 2. 

The ornamental design for a showerhead, as shown and described. 